4 adjectives to describe ploughboys

It is not uttered with rapidity, but with the pleasing tranquillity of a careless ploughboy, whistling for amusement.

Though my disguise was good, I fear I made but an indifferent bad ploughboy when walking, and found a difficulty in dealing with my hands, not knowing how ploughboys are wont to carry them.

A lady who sat by Mrs. Merton, asked her, in a whisper loud enough to be heard all over the room, whether (indicating Harry) that was the little ploughboy whom she had heard Mr. Barlow was attempting to bring up like a gentleman?

A sturdy ploughboy comes up with a piece of iron on his shoulder; it does not look large, but it is as much as he can carry.

4 adjectives to describe  ploughboys